ppt unit 8
TRANSCRIPT
![Page 1: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/1.jpg)
Unit 8. It’s a noisy world
![Page 2: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/2.jpg)
![Page 3: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/3.jpg)
Objects which make no sounds
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Objects which make sounds
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Sounds can be…
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Pleasant sounds .
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Unpleasant sounds .
noises
![Page 8: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/8.jpg)
loud quiet
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high
low
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Sounds that are bad for your health
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What can sound
travel through?
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Sounds can travel through air
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Sounds can travel through solids
![Page 14: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/14.jpg)
Sounds can travel through water
![Page 15: Ppt unit 8](https://reader037.vdocument.in/reader037/viewer/2022102618/55909cdc1a28ab89148b4616/html5/thumbnails/15.jpg)
Machines that make noise
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Machines that transmit sound
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The end